@use '../core/style/elevation';
@use '../core/theming/theming';
@use 'sass:map';
@use '../core/tokens/m2-utils';
@use '../core/tokens/m3-utils';

// Tokens that can't be configured through Angular Material's current theming API,
// but may be in a future version of the theming API.
@function get-unthemable-tokens($theme) {
  $system: m2-utils.get-system($theme);

  // visible-track-opacity and hidden-track-opacity:
  // The hidden and visible track represent whichever track is visible or
  // hidden in the ui. This could be the .mdc-switch__track :before or
  // :after depending on whether the switch is selected or unselected.
  //
  // The m2 slide-toggle uses transforms to hide & show the tracks while
  // the m3 slide-toggle uses opacity.
  @return (
    slide-toggle-disabled-handle-opacity: 0.38,
    slide-toggle-disabled-selected-handle-opacity: 0.38,
    slide-toggle-disabled-selected-icon-opacity: 0.38,
    slide-toggle-disabled-track-opacity: 0.12,
    slide-toggle-disabled-unselected-handle-opacity: 0.38,
    slide-toggle-disabled-unselected-icon-opacity: 0.38,
    slide-toggle-disabled-unselected-track-outline-color: transparent,
    slide-toggle-disabled-unselected-track-outline-width: 1px,
    slide-toggle-handle-height: 20px,
    slide-toggle-handle-shape: 10px,
    slide-toggle-handle-width: 20px,
    slide-toggle-hidden-track-opacity: 1,
    slide-toggle-hidden-track-transition: transform 75ms 0ms cubic-bezier(0.4, 0, 0.6, 1),
    slide-toggle-pressed-handle-size: 20px,
    slide-toggle-selected-focus-state-layer-opacity: map.get($system, focus-state-layer-opacity),
    slide-toggle-selected-handle-horizontal-margin: 0,
    slide-toggle-selected-handle-size: 20px,
    slide-toggle-selected-hover-state-layer-opacity: map.get($system, hover-state-layer-opacity),
    slide-toggle-selected-icon-size: 18px,
    slide-toggle-selected-pressed-handle-horizontal-margin: 0,
    slide-toggle-selected-pressed-state-layer-opacity:
        map.get($system, pressed-state-layer-opacity),
    slide-toggle-selected-track-outline-color: transparent,
    slide-toggle-selected-track-outline-width: 1px,
    slide-toggle-selected-with-icon-handle-horizontal-margin: 0,
    slide-toggle-track-height: 14px,
    slide-toggle-track-outline-color: transparent,
    slide-toggle-track-outline-width: 1px,
    slide-toggle-track-shape: 7px,
    slide-toggle-track-width: 36px,
    slide-toggle-unselected-focus-state-layer-opacity: map.get($system, focus-state-layer-opacity),
    slide-toggle-unselected-handle-horizontal-margin: 0,
    slide-toggle-unselected-handle-size: 20px,
    slide-toggle-unselected-hover-state-layer-opacity: map.get($system, focus-state-layer-opacity),
    slide-toggle-unselected-icon-size: 18px,
    slide-toggle-unselected-pressed-handle-horizontal-margin: 0,
    slide-toggle-unselected-pressed-state-layer-opacity: 0.1,
    slide-toggle-unselected-with-icon-handle-horizontal-margin: 0,
    slide-toggle-visible-track-opacity: 1,
    slide-toggle-visible-track-transition: transform 75ms 0ms cubic-bezier(0, 0, 0.2, 1),
    slide-toggle-with-icon-handle-size: 20px,
  );
}

// Tokens that can be configured through Angular Material's color theming API.
@function get-color-tokens($theme) {
  $system: m2-utils.get-system($theme);

  @return map.merge(
      private-get-color-palette-color-tokens($theme, primary),
      (
        slide-toggle-disabled-label-text-color:
            m3-utils.color-with-opacity(map.get($system, on-surface), 38%),
        slide-toggle-disabled-handle-elevation-shadow: elevation.get-box-shadow(0),
        slide-toggle-disabled-selected-handle-color: map.get($system, on-surface),
        slide-toggle-disabled-selected-track-color: map.get($system, on-surface),
        slide-toggle-disabled-unselected-handle-color: map.get($system, on-surface),
        slide-toggle-disabled-unselected-icon-color: map.get($system, surface-variant),
        slide-toggle-disabled-unselected-track-color: map.get($system, on-surface),
        slide-toggle-handle-elevation-shadow: elevation.get-box-shadow(1),
        slide-toggle-handle-surface-color: map.get($system, surface),
        slide-toggle-label-text-color: map.get($system, on-surface),
        slide-toggle-unselected-hover-handle-color: map.get($system, inverse-surface),
        slide-toggle-unselected-focus-handle-color: map.get($system, inverse-surface),
        slide-toggle-unselected-focus-state-layer-color: map.get($system, on-surface),
        slide-toggle-unselected-focus-track-color: map.get($system, outline),
        slide-toggle-unselected-icon-color: map.get($system, surface-variant),
        slide-toggle-unselected-handle-color: map.get($system, on-surface-variant),
        slide-toggle-unselected-hover-state-layer-color: map.get($system, on-surface),
        slide-toggle-unselected-hover-track-color: map.get($system, outline),
        slide-toggle-unselected-pressed-handle-color: map.get($system, inverse-surface),
        slide-toggle-unselected-pressed-track-color: map.get($system, outline),
        slide-toggle-unselected-pressed-state-layer-color: map.get($system, on-surface),
        slide-toggle-unselected-track-color: map.get($system, outline),
      )
  );
}

// Generates the mapping for the properties that change based on the slide toggle color.
@function private-get-color-palette-color-tokens($theme, $color-variant) {
  $system: m2-utils.get-system($theme);
  $system: m3-utils.replace-colors-with-variant($system, primary, $color-variant);

  @return (
    slide-toggle-selected-icon-color: map.get($system, on-primary),
    slide-toggle-disabled-selected-icon-color: map.get($system, on-primary),
    slide-toggle-selected-focus-state-layer-color: map.get($system, primary),
    slide-toggle-selected-handle-color: map.get($system, primary),
    slide-toggle-selected-hover-state-layer-color: map.get($system, primary),
    slide-toggle-selected-pressed-state-layer-color: map.get($system, primary),
    slide-toggle-selected-focus-handle-color: map.get($system, primary),
    slide-toggle-selected-hover-handle-color: map.get($system, primary),
    slide-toggle-selected-pressed-handle-color: map.get($system, primary),
    slide-toggle-selected-focus-track-color: map.get($system, inverse-primary),
    slide-toggle-selected-hover-track-color: map.get($system, inverse-primary),
    slide-toggle-selected-pressed-track-color: map.get($system, inverse-primary),
    slide-toggle-selected-track-color: map.get($system, inverse-primary),
  );
}

// Tokens that can be configured through Angular Material's typography theming API.
@function get-typography-tokens($theme) {
  $system: m2-utils.get-system($theme);
  @return (
    slide-toggle-label-text-font: map.get($system, body-medium-font),
    slide-toggle-label-text-line-height: map.get($system, body-medium-line-height),
    slide-toggle-label-text-size: map.get($system, body-medium-size),
    slide-toggle-label-text-tracking: map.get($system, body-medium-tracking),
    slide-toggle-label-text-weight: map.get($system, body-medium-weight)
  );
}

// Tokens that can be configured through Angular Material's density theming API.
@function get-density-tokens($theme) {
  $system: m2-utils.get-system($theme);
  $density-scale: theming.clamp-density(map.get($system, density-scale), -3);

  @return (
    // The diameter of the handle ripple.
    slide-toggle-state-layer-size: map.get((
      0: 40px,
      -1: 36px,
      -2: 32px,
      -3: 28px,
    ), $density-scale)
  );
}
